用于对舱壁进行支撑加强的支柱应具有足够强度，其横截面的应不少于：（）A.50×50m

阅读理解。

     During his life Dr James Naismith worked as a doctor, taught P.E and wrote several books. While he never

thought it very important, Dr Naismith is today best known for one thing. He was the inventor of basketball. 　　

     Dr James Naismith was born in Canada in 1861 and his first job was at a special sports school in the USA.

One day the school principal told James he was having a problem with the students. Because of heavy snow,

the students could not go outside. He told James that they needed a sport the boys could play indoors and gave

the teacher two weeks to think of something. 　　

     It was on the very last day that James came up with his idea. The "birth of basketball" is said to be on

December 21, 1891, when two teams from the school played the first game. It was quite different from the

basketball games of today. It had 9 players on each team and footballs were used instead of basketballs. Soon

after, the game changed to 5 players on each side, using special"basketballs" through nets. 　　

     Although Dr Naismith did not live to see basketball become the worldwide game it is today, in 1936, just

three years before his death, basketball became an Olympic sport at the games in Berlin.

1. Which of the following things did Dr James Naismith NOT do?

A. Teach P.E in school.

B. Write some books.

C. Work at hospital.

D. Take part in the Olympic Games.

2. In which season did Dr Naismith invent basketball?

A. Summer.

B. Winter.

C. Spring.

D. Autumn.

3. Why is December 21 thought to be the birthday of basketball? 　

A. It was on this day that Dr Naismith came up with his idea for basketball. 　

B. It was the day on which Dr Naismith was born. 　

C. It was the day on which Dr Naismith was asked by his boss to invent a new game. 　

D. It was on this day that the first game of basketball was played.

4. At the time of Dr Naismith's death, which of the following was true?

A. Basketball was already a worldwide game.

B. Basketball was played with 9 players on each side.

C. Basketball was an Olympic sport.

D. Basketball was still played using footballs. 

5. What would be the best title for this story?

A. History of Basketball

B. How Basketball Has Changed

C. Father of Basketball

D. Happy Birthday, Basketball

The boy writes ________ . 

A．wellenough

B．goodenough

C．enoughwell

D．enoughgood

联系上下文，解释下列句中画线的词语，并造句。

（1）又像一个忍俊不禁的笑容，就要绽开似的。

     原意是：                                                                    _____________ 

     文中的含义是：                                                                                 

     造句：                                                                                  ______  

（2）但花朵从来都不稀落，东一穗西一串伶仃地挂在树梢……

     原意是：                                                                                         ____     

     文中的意思是：                                                                                           

     造句：                                                                              ______________  

提请减刑建议书的正文部分包括哪几项内容？

五代时期，（）将幽云十六州割让给契丹，使整个华北经常受到侵扰。

A、宇文泰

B、杨国忠

C、李林甫

D、石敬瑭